EV / New EnergyMotor-plant lines / e-drive assembly EOL stations
EV Motor End-of-Line (EOL) Whine Evaluation
01
Pain Points
- !Each EOL station has only seconds of cycle time, so manual waterfall reading can't go on the line.
- !Whine is a narrowband tone; overall level misses it — you must check whether a specific order stands out within an RPM segment.
- !Line evaluation must be traceable and recomputable, not left to a veteran's ear.
02
The Tinia Approach
Short-sweep resampling into the order domain, extraction of the target-order amplitude and tonal prominence, and threshold evaluation — the SDK stays resident at the station and returns results within cycle time.
Order trackingTonal prominenceRPM-segment aggregationPASS/FAILSDK to MES
03
Nodes Used
Order Trackingorder_tracking
Short-sweep resampling into the order domainTonalitytonality
Narrowband whine-prominence assessmentIndicator Mathindicator_math
Target-order amplitude + RPM-segment aggregationSpec Limit Checkspec_limit_check
Line-threshold PASS / FAILCore nodes; add or remove steps as needed for your data and standards — the node graph is always editable.
04
Expected Output
- Target-order amplitude and tonal prominence for each motor.
- A within-cycle-time PASS / FAIL result, connectable to the line MES via SDK.
- An end-of-line record with explicit, queryable, recomputable thresholds and conventions.
Reference Standards / Engineering PracticeEngineering practice · OEM EOL internal-control standards
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